It is worth considering that the Greek word “Σχολείο” has traveled to so many languages and it is used on an everyday basis, by hundreds of millions of people in the 5 continents.
You may find the list of the word “school” in 15 languages:
Greek: σχολείο
English: school
French: école
Ukrainian: Школа
Polish: szkoła
Rumanian: scoala
German: schule
Russian: школа
Bulgarian: школа
Dutch: school
Slovenian: šola
Spanish: escuela
Italian: scuola
Hungarian: iskola
Portuguese: escola